Can games be used to bring change?

I know games are only for entertainment. But I feel that of all entertainment forms games has the most impact on us? What do you say? If you agree, can that be used to bring some change and help us to be better persons. would such games be preachy?

Movies are also supposed to be for entertainment only (at least the fictional one) but they have been known to forge opinions and "convey knowledge" of lands/history/people - they are the ones that have the most effect on us (from the entertainment industry)

I don't really understand the concept of preachy - you are the director/producer and you are presenting an idea supported by visuals in a form of a game to the public, they either like it or not. When they view your idea they have to consider what you may have wanted to convey and/or why the characters make such choices, in the context of their own experience.

Some people think that the Matrix is preachy, so I wouldn't worry about it

My advise would be, if you are interested in doing such a project - make sure that a game is story driven and make sure to make the locations/environment stand out.

This wouldn't necessarily bring to change, but it may make people aware of a message or an event, if they are interested enough, they can look further into it (remember, they may not be aware such a thing exist at all) and at some point they will have to make a choice.

Movies are also supposed to be for entertainment only (at least the fictional one) but they have been known to forge opinions and "convey knowledge" of lands/history/people - they are the ones that have the most effect on us (from the entertainment industry)

I don't really understand the concept of preachy - you are the director/producer and you are presenting an idea supported by visuals in a form of a game to the public, they either like it or not. When they view your idea they have to consider what you may have wanted to convey and/or why the characters make such choices, in the context of their own experience.

Some people think that the Matrix is preachy, so I wouldn't worry about it

My advise would be, if you are interested in doing such a project - make sure that a game is story driven and make sure to make the locations/environment stand out.

This wouldn't necessarily bring to change, but it may make people aware of a message or an event, if they are interested enough, they can look further into it (remember, they may not be aware such a thing exist at all) and at some point they will have to make a choice.

When I play video games for a while, I get reminded by it for a long time when I do something..just like how meditation makes you mindful. So if this is the case for most of us, I thought, why not use this effect in a positive way. Like not trashing the surroundings, taking care of leaky taps, unused lamps..like that, taking care of them in auto pilot mode.